a newly formed group, newtown united, is advocating what it calls "sensible gun legislation." we have 20 children that are trying to point us the way, and if we don't follow their lead, we have failed them and their deaths are in vain. >> the day before her death, nancy lanza, the mother of the gunman, had just returned from a short trip alone to a luxury resort in new hampshire. friends say in recent years she felt comfortable about leaving her son adam at home >> police are investigating this materials this morning that were found stored in a san mateo home. police and fire officials detonated the materials found in the home in the 400 block of parrott drive. authorities say the materials were not stable to move without potential of explosion and evacuated the block while warning other residents. the san mateo county bomb squad was also called into the scene. >> 5:05 this live look outside to the north and the golden gate bridge. a big drop on wall street. ?Ñ >> welcome back. a big drop on wall street with growing concerns that a fiscal cliff deal before the the dow droppin